gives all you need to know on this (and you
really need to know all of it, too).

Nick
n.j.cox@durham.ac.uk

Scott Cunningham replied to Gauri Khanna [edited]

> > 1) I would like to generate a new variable :
> >
> > generate newvariable=var1+var2+var3 if dum1=1 and or dum2=1 and or
> > dum3=1
>
> gen newvariable=(var1+var2+var3) if dum1==1 | dum2==1 | dum3==1
>
> > 2) If instead I did the following....
> >
> > generate newvariable=var1+var2+var3 if dum1=1 & dum2=1 & dum3=1
> >
> > .... I would only capture values for var1, var2 and var3 if
> ALL the
> > three dummies simultaneously are 1. is this correct? If so I do
> > not want this.

> You want newvariable to equal the sum of three variables if any of
> the dummy variables = 1, but it looks like you are requiring it to
> equal 1 if all of the dummies equal 1. In other words, you
> are using
> the ampersand (&) when you should be using the (|) (see above).